1# kbuild trick to avoid linker error. Can be omitted if a module is built. 2obj- := dummy.o 3 4# List of programs to build 5hostprogs-y := test_lru_dist 6hostprogs-y += sock_example 7hostprogs-y += fds_example 8hostprogs-y += sockex1 9hostprogs-y += sockex2 10hostprogs-y += sockex3 11hostprogs-y += tracex1 12hostprogs-y += tracex2 13hostprogs-y += tracex3 14hostprogs-y += tracex4 15hostprogs-y += tracex5 16hostprogs-y += tracex6 17hostprogs-y += test_probe_write_user 18hostprogs-y += trace_output 19hostprogs-y += lathist 20hostprogs-y += offwaketime 21hostprogs-y += spintest 22hostprogs-y += map_perf_test 23hostprogs-y += test_overhead 24hostprogs-y += test_cgrp2_array_pin 25hostprogs-y += test_cgrp2_attach 26hostprogs-y += test_cgrp2_attach2 27hostprogs-y += test_cgrp2_sock 28hostprogs-y += test_cgrp2_sock2 29hostprogs-y += xdp1 30hostprogs-y += xdp2 31hostprogs-y += test_current_task_under_cgroup 32hostprogs-y += trace_event 33hostprogs-y += sampleip 34hostprogs-y += tc_l2_redirect 35hostprogs-y += lwt_len_hist 36hostprogs-y += xdp_tx_iptunnel 37hostprogs-y += test_map_in_map 38hostprogs-y += per_socket_stats_example 39hostprogs-y += load_sock_ops 40hostprogs-y += xdp_redirect 41hostprogs-y += xdp_redirect_map 42 43# Libbpf dependencies 44LIBBPF := ../../tools/lib/bpf/bpf.o 45 46test_lru_dist-objs := test_lru_dist.o $(LIBBPF) 47sock_example-objs := sock_example.o $(LIBBPF) 48fds_example-objs := bpf_load.o $(LIBBPF) fds_example.o 49sockex1-objs := bpf_load.o $(LIBBPF) sockex1_user.o 50sockex2-objs := bpf_load.o $(LIBBPF) sockex2_user.o 51sockex3-objs := bpf_load.o $(LIBBPF) sockex3_user.o 52tracex1-objs := bpf_load.o $(LIBBPF) tracex1_user.o 53tracex2-objs := bpf_load.o $(LIBBPF) tracex2_user.o 54tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o 55tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o 56tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o 57tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o 58load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o 59test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o 60trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o 61lathist-objs := bpf_load.o $(LIBBPF) lathist_user.o 62offwaketime-objs := bpf_load.o $(LIBBPF) offwaketime_user.o 63spintest-objs := bpf_load.o $(LIBBPF) spintest_user.o 64map_perf_test-objs := bpf_load.o $(LIBBPF) map_perf_test_user.o 65test_overhead-objs := bpf_load.o $(LIBBPF) test_overhead_user.o 66test_cgrp2_array_pin-objs := $(LIBBPF) test_cgrp2_array_pin.o 67test_cgrp2_attach-objs := $(LIBBPF) test_cgrp2_attach.o 68test_cgrp2_attach2-objs := $(LIBBPF) test_cgrp2_attach2.o cgroup_helpers.o 69test_cgrp2_sock-objs := $(LIBBPF) test_cgrp2_sock.o 70test_cgrp2_sock2-objs := bpf_load.o $(LIBBPF) test_cgrp2_sock2.o 71xdp1-objs := bpf_load.o $(LIBBPF) xdp1_user.o 72# reuse xdp1 source intentionally 73xdp2-objs := bpf_load.o $(LIBBPF) xdp1_user.o 74test_current_task_under_cgroup-objs := bpf_load.o $(LIBBPF) cgroup_helpers.o \ 75 test_current_task_under_cgroup_user.o 76trace_event-objs := bpf_load.o $(LIBBPF) trace_event_user.o 77sampleip-objs := bpf_load.o $(LIBBPF) sampleip_user.o 78tc_l2_redirect-objs := bpf_load.o $(LIBBPF) tc_l2_redirect_user.o 79lwt_len_hist-objs := bpf_load.o $(LIBBPF) lwt_len_hist_user.o 80xdp_tx_iptunnel-objs := bpf_load.o $(LIBBPF) xdp_tx_iptunnel_user.o 81test_map_in_map-objs := bpf_load.o $(LIBBPF) test_map_in_map_user.o 82per_socket_stats_example-objs := $(LIBBPF) cookie_uid_helper_example.o 83xdp_redirect-objs := bpf_load.o $(LIBBPF) xdp_redirect_user.o 84xdp_redirect_map-objs := bpf_load.o $(LIBBPF) xdp_redirect_map_user.o 85 86# Tell kbuild to always build the programs 87always := $(hostprogs-y) 88always += sockex1_kern.o 89always += sockex2_kern.o 90always += sockex3_kern.o 91always += tracex1_kern.o 92always += tracex2_kern.o 93always += tracex3_kern.o 94always += tracex4_kern.o 95always += tracex5_kern.o 96always += tracex6_kern.o 97always += sock_flags_kern.o 98always += test_probe_write_user_kern.o 99always += trace_output_kern.o 100always += tcbpf1_kern.o 101always += tcbpf2_kern.o 102always += tc_l2_redirect_kern.o 103always += lathist_kern.o 104always += offwaketime_kern.o 105always += spintest_kern.o 106always += map_perf_test_kern.o 107always += test_overhead_tp_kern.o 108always += test_overhead_kprobe_kern.o 109always += parse_varlen.o parse_simple.o parse_ldabs.o 110always += test_cgrp2_tc_kern.o 111always += xdp1_kern.o 112always += xdp2_kern.o 113always += test_current_task_under_cgroup_kern.o 114always += trace_event_kern.o 115always += sampleip_kern.o 116always += lwt_len_hist_kern.o 117always += xdp_tx_iptunnel_kern.o 118always += test_map_in_map_kern.o 119always += cookie_uid_helper_example.o 120always += tcp_synrto_kern.o 121always += tcp_rwnd_kern.o 122always += tcp_bufs_kern.o 123always += tcp_cong_kern.o 124always += tcp_iw_kern.o 125always += tcp_clamp_kern.o 126always += xdp_redirect_kern.o 127always += xdp_redirect_map_kern.o 128 129HOSTCFLAGS += -I$(objtree)/usr/include 130HOSTCFLAGS += -I$(srctree)/tools/lib/ 131HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ 132HOSTCFLAGS += -I$(srctree)/tools/lib/ -I$(srctree)/tools/include 133HOSTCFLAGS += -I$(srctree)/tools/perf 134 135HOSTCFLAGS_bpf_load.o += -I$(objtree)/usr/include -Wno-unused-variable 136HOSTLOADLIBES_fds_example += -lelf 137HOSTLOADLIBES_sockex1 += -lelf 138HOSTLOADLIBES_sockex2 += -lelf 139HOSTLOADLIBES_sockex3 += -lelf 140HOSTLOADLIBES_tracex1 += -lelf 141HOSTLOADLIBES_tracex2 += -lelf 142HOSTLOADLIBES_tracex3 += -lelf 143HOSTLOADLIBES_tracex4 += -lelf -lrt 144HOSTLOADLIBES_tracex5 += -lelf 145HOSTLOADLIBES_tracex6 += -lelf 146HOSTLOADLIBES_test_cgrp2_sock2 += -lelf 147HOSTLOADLIBES_load_sock_ops += -lelf 148HOSTLOADLIBES_test_probe_write_user += -lelf 149HOSTLOADLIBES_trace_output += -lelf -lrt 150HOSTLOADLIBES_lathist += -lelf 151HOSTLOADLIBES_offwaketime += -lelf 152HOSTLOADLIBES_spintest += -lelf 153HOSTLOADLIBES_map_perf_test += -lelf -lrt 154HOSTLOADLIBES_test_overhead += -lelf -lrt 155HOSTLOADLIBES_xdp1 += -lelf 156HOSTLOADLIBES_xdp2 += -lelf 157HOSTLOADLIBES_test_current_task_under_cgroup += -lelf 158HOSTLOADLIBES_trace_event += -lelf 159HOSTLOADLIBES_sampleip += -lelf 160HOSTLOADLIBES_tc_l2_redirect += -l elf 161HOSTLOADLIBES_lwt_len_hist += -l elf 162HOSTLOADLIBES_xdp_tx_iptunnel += -lelf 163HOSTLOADLIBES_test_map_in_map += -lelf 164HOSTLOADLIBES_xdp_redirect += -lelf 165HOSTLOADLIBES_xdp_redirect_map += -lelf 166 167# Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline: 168# make samples/bpf/ LLC=~/git/llvm/build/bin/llc CLANG=~/git/llvm/build/bin/clang 169LLC ?= llc 170CLANG ?= clang 171 172# Trick to allow make to be run from this directory 173all: 174 $(MAKE) -C ../../ $(CURDIR)/ 175 176clean: 177 $(MAKE) -C ../../ M=$(CURDIR) clean 178 @rm -f *~ 179 180$(obj)/syscall_nrs.s: $(src)/syscall_nrs.c 181 $(call if_changed_dep,cc_s_c) 182 183$(obj)/syscall_nrs.h: $(obj)/syscall_nrs.s FORCE 184 $(call filechk,offsets,__SYSCALL_NRS_H__) 185 186clean-files += syscall_nrs.h 187 188FORCE: 189 190 191# Verify LLVM compiler tools are available and bpf target is supported by llc 192.PHONY: verify_cmds verify_target_bpf $(CLANG) $(LLC) 193 194verify_cmds: $(CLANG) $(LLC) 195 @for TOOL in $^ ; do \ 196 if ! (which -- "$${TOOL}" > /dev/null 2>&1); then \ 197 echo "*** ERROR: Cannot find LLVM tool $${TOOL}" ;\ 198 exit 1; \ 199 else true; fi; \ 200 done 201 202verify_target_bpf: verify_cmds 203 @if ! (${LLC} -march=bpf -mattr=help > /dev/null 2>&1); then \ 204 echo "*** ERROR: LLVM (${LLC}) does not support 'bpf' target" ;\ 205 echo " NOTICE: LLVM version >= 3.7.1 required" ;\ 206 exit 2; \ 207 else true; fi 208 209$(src)/*.c: verify_target_bpf 210 211$(obj)/tracex5_kern.o: $(obj)/syscall_nrs.h 212 213# asm/sysreg.h - inline assembly used by it is incompatible with llvm. 214# But, there is no easy way to fix it, so just exclude it since it is 215# useless for BPF samples. 216$(obj)/%.o: $(src)/%.c 217 $(CLANG) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(EXTRA_CFLAGS) -I$(obj) \ 218 -I$(srctree)/tools/testing/selftests/bpf/ \ 219 -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ 220 -Wno-compare-distinct-pointer-types \ 221 -Wno-gnu-variable-sized-type-not-at-end \ 222 -Wno-address-of-packed-member -Wno-tautological-compare \ 223 -Wno-unknown-warning-option \ 224 -O2 -emit-llvm -c $< -o -| $(LLC) -march=bpf -filetype=obj -o $@ 225